Ventilating window-sash lock.



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VENTILAIIRG WINDOW LOOK.

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meanness aux, or saooxnr'u, NEW roan vaurrnarme wnmow-sasrr LOCK.

Specification of Letters Patent.

Patented Dec. 30, 1913.

Application filed September 21, 1913. Serial No. 721,591.

1711 Lincoln Place, Brooklyn, county of,

Kings and State of New York, have invented certain new anduseful Im rovements in Ventilating Window-Sash Jocks, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

The resent invention is ada ted for use with windows having upper an lower sliding sashes, and it relates to a meansfor locking the upper sash when lowered a sufficient distance while the lower sash is raised about the'same distance, to permit a certain amount of ventilation.

The means provided in the present invention consists of a locking-arm hinged to the upper sash so thatit may project across the top of the lower sash in contact. therewith w on the-upper sash, or both sashes are arranged'for ventilation;

When hingedto the upper sash it may be turned to clear the lower sash so that both sashes may be moved freel but when set in its operative position it is locked by suitable means to the inner edge of the window-casing, thus holdin the upper sash from any movement. The ockin means is preferably secured about five inc es above the top of the bottom sash when the latter is closed, to ermit the raising of the bottom sash, if esired, sufiiciently for ventilation. This locking-arm connectin the u per sash with the window-casing, olds t e upper sash from moving and prevents the lower sash from risin above a certain height, !thus allowing t e uppir sash, or hot upper and lower sashes, to open with safety for continuous ventilation of the apartment.

The invention will be understood by reference to the annexed drawing, in which- Figure 1 is an elevation and Fig. 2 a plan of the fixtures with the parts of the window connected thereto; Fig. 3 is a perective view showin the locking-arm hinged to the upper see as in Figs. 1 and 2; and Fi 4 shows a modified construction of the loc 'ng-arm of Fig. 8.

a designates the inner frame of the win- (low-casing, and b the outer frames. p v

o. designates the parting-strip set in the frame a, and d a stop-bead upon the frame I) at the inner side of the casin e'designates the stile of the upper sash, and e its bottom rail.

1 designates the stile of the lower sash, and f its top rail.

The lockin -arm is shown aflixed to the stile e a few inches above its bottom rail e and formed as a wire link having a crossbar 9 at one end for a hinge-pin, with sidebars 9' projected therefrom and the free end of the arm having a loop 9. This locking-arm is hinged to the stile e by a hinge-plate h-having a transverse groove 2 to receive the hingein g and secured to the stile e by screws 9. With this construction the arm maybe turned transversely and-its free end lie a ainst the stop-bead :2, as indicated by the otted lines 9 in Fig. 2. The u er sash may be lowered with the arm in t 1s position until the free end of the arm enters the notch m of the locking device, which may have the form of the bracket] secured to the stop-bead d or inner margin of the window-frame. When thus adjusted, the free end of the arm may be locked in the notch by any suitable means, as the bolt is, threaded in the bracket Z, to extend into the notch and engage the open loop 7 of the arm, as shown in Fig. 3. Such relation of the screw to the link is indicated by the dotted circle 70' indicating the position of the screw within the open loop in Fig. 1.

It is immaterial how the locking-arm is mounted upon or hinged to the stile 0 provided it can swing over the top of the lower sash to engage the bracket and be secured by the lockin olt. For greater security, the lockin -bo t k may be formed so as to he opens only by means of a key, and it may be so shaped or fixed u on the bracket that it could not be rotate by a tongs extended through either of the ventilating openings. Such locking of the locking-arm to the window-frame holds the u per sash from movin and the contact of the arm with the top 0 the lower sash prevents the same from being lifted above the desired height, and both sashes are thus locked from further movement when the up er one is lowered, and the lower one is hiied, sufficiently for ventilation. The arm may be hinged to the stile e at any distance, as ten inches,

' cure the ventilation {desire yond the desired limit when. t ran higher.

. bu tlne i enou' h to the edge of eithersash to permit t e locking-screw being reachedbyany one throu h the ventilating opening.

The locking-arm is hinged to swing clear of the top of the lower sash when it is desired to move either of the sashes freely, and the arm is shown inFigs. 1 and 2 parallel with the plane of the up er sash 'so that it may lie in a line with t. d partingstrip 0 to clear the lower sash when either sash is moved. The locking-armzmay, if desired, be made as shown inFig. 4, where a piece of wire is bent atthe middle of its length to form an open slot and its terminals bent at right angles to the axis of thearm and fitted to opposite grooves in the hinge-plate h. This construction is equivalent in all respects to that shown 'in Figs. 1, 2 and 3. The fixtures are readily attached to the window-sashes-and frames by a few screws, and then serve efieot-ually to prevent the sashes from'beinglopened beey are ard for ventilation. a

T e locking-device is set for operation by swinging the arm transverse to the lower sash, then lowering the up erv-sash and securing the locking-arm in its operative position. The lowersash can then he raised intov contact with thelocking-arm, but no t will be observed thatthe locking-arm 18, by its hin eplate, held movably while it is connect permanently with the part upon which it is jointedi and while it is secured to such part it is a ways in readiness for. use, and not liable to be misplaced or lost, as with a removable fixture. It will also be observed that the loekin sarm extends from the inner face of the st e e to the nearest surface on the window-casing, which is a broad flat surface of thestop-bead d. The hinge-plate supports the bin of the locking-arm upon t e surfaceof t e stile so that the stile requires no cutting or recessing for applying the fixture.

The locking-arm, by its relation to the stile and the stop-bead, is formed of a single straight and stron piece which requires no joints or links an can be swung parallel with the upper sash so as not only to clear the lower sash when unlocked, but permittmg both the sashes to be moved freely without the necessity of detaching thelockmgr-bolt the sash, as in some. previous constructions- The, permanent connection of the lockingarm In its working position and its form and capacity to swm paral eI between the sashes, furnishes a. c eapand simple com struction for which I have made a special laims The form of the locking-arm and bracket is immaterial. The means for lockin the arm in the position described permltsthe lower sash to be raised at the same time that the upper sash is lowered, thus alfording a double amount of fresh air, which is a much more healthful arrangement than where only the upper sash is lowered. The locking-arm may be formed in any manner to be engaged by the screwbolt is.

Having thus set forth the nature of the invention, what is claimed herein is:

1. In a ventilating sash locking device, the combination, with a window casing having upper and lower sashes, of the hingeplate It attached to the stile of the upper sash and having a transverse groove 2', the one-piece locking-arm having an integral hinge-pin g at one end fitted to the socket of the hinge-plate and adapted to clear the hinge-plate when turned against the upper sash and to swing across the top of the lower sash against the stop-bead, and the stop-bead having the bracket Z with the notch n to receive the end of the lockingarm, and means to lock the said arm in the said notch.

2. In a ventilating sash locking device,

I the combination, with a window-casing having upper and lower sashes, of the hingeplate having a transverse groove 2', a locklug-arm having side-bars g a hinge-pin g connecting one end of the side-bars and fitted to the said groove, the o ening between the side-bars bein adapte to clear the hinge-platev when t e arm is in a line with it, and the bracket Z upon the adjacent edge of the window-casing adapted to receive the locking-arm, and having the bolt is threaded in the bracket to lock the end of the arm thereto.

3. In a ventilatin sash locking device, the combination, wit a window-casin having up I and lower sashes, of the hingeplates secured upon the stile of the upper sash, a locking-arm having one end hinged in the said hingeplate and ads ted to swing from a position parallel wit the upper sash across the top of the lower sash, and a bracket upon: the windowdrame having a bolt adapted to engage the end of the locki -arm to lock the same to the bracket.

n testimony whereof I have hereunto set my hand in they presence of two subscribing witnesses.

MENDEL S'HE'NK.

Witnesses Til-IOMXS S. Cams.

cents each, by addressing the "Gemmlesioner o2 Patents. aahinztomfl. 0. r 

